JP2017218161A - Pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch in which a situation in which a large amount of contents leak from an opening formed by peeling a seal is unlikely to occur. SOLUTION: A pouch 1 has a storage space 14, a first side seal portion 21 along edges 11B and 12B of a pair of seats 11 and 12, and a steam passage having a shape recessed toward the storage space 14 side. The seal portion 20 including the seal portion 30 and the unsealed portion 90 which is a part of the pair of sheets 11 and 12 and is an unsealed portion surrounded by the steam-passing seal portion 30 are provided. The ventilation seal portion 30 has a tip portion 40 configured to be peeled off due to stress concentration when the pressure in the accommodation space 14 rises, and a connection portion 50 connecting the tip portion 40 and the ventilation seal portion 30. And include. The connection portion 50 has a wider seal width toward the first side seal portion 21 side from the tip portion 40 side, and restricts the peeling of the steam passage seal portion 30 progressing from the tip portion 40 side toward the steam passage seal portion 30 side. The peeling control unit 70 is included. [Selection diagram] Fig. 1

Description

  The present invention relates to a pouch used for heating contents.

  Pouches that are used to heat the contents are known. The pouch is provided with a structure for discharging water vapor generated from the contents by heating to the outside of the pouch. For example, the side seal portion of the pouch described in Patent Document 1 is provided with a recessed portion formed to be recessed toward the accommodation space side of the pouch. When this pouch is heated by a heating means such as a microwave oven, the seal of the recessed portion is peeled off as the internal pressure of the accommodation space increases, so that an opening is formed in the recessed portion, and water vapor passes through the opening and passes through the pouch. Is discharged outside.

WO2013 / 133092

When the pouch is tilted after the heating of the pouch is completed, a large amount of contents may leak out of the pouch from the opening formed in the recessed portion.
An object of the present invention is to provide a pouch that is unlikely to cause a situation in which a large amount of contents leak from an opening formed by peeling of a seal.

  [1] In one form of the pouch according to the present invention, the pair of sheets are sealed to each other so that a pair of stacked sheets and an accommodation space capable of accommodating contents are formed between the pair of sheets. A portion of the first seal portion along the edge of the pair of sheets, and a seal portion including a second seal portion having a shape recessed toward the accommodation space, and a part of the pair of sheets And an unsealed portion that is an unsealed portion surrounded by the second seal portion, and the second seal portion has an increased pressure in the accommodation space due to water vapor generated from the contents. A tip portion configured to be peeled off when stress concentration occurs, and a connecting portion that connects the tip portion and the first seal portion, the connecting portion having a seal width wider than the tip portion. Is widely A peeling restricting portion for restricting peeling of the second seal portion that progresses from the end portion side toward the first seal portion side, the peeling restricting portion from the tip end side to the first seal portion side The width of the seal is wider toward

  The contents are put into the accommodation space of the pouch and the opening of the pouch is sealed so that the accommodation space is closed, thereby forming a pouch that takes a closed state. When the closed pouch is heated, water vapor is generated from the contents, and the pressure in the accommodation space increases. When the tip of the second seal part peels off as the pressure increases, an opening is formed at the tip. Since the peeling restriction part is provided in the second seal part, the peeling of the seal in the second seal part is restricted by the peeling restriction part. The water vapor staying in the accommodation space passes through a passage formed between the pair of sheets at least at the opening formed at the front end portion and the unsealed portion, and is discharged outside the edges of the pair of sheets. .

  According to the pouch, since water vapor is discharged to the outside of the accommodation space in this way, it is difficult to burst. In addition, the size of the opening formed in the second seal portion by the peeling of the second seal portion is defined by the peeling restricting portion, and an opening larger than the opening having a predetermined size is formed in the second seal portion. It is hard to be done. For this reason, even if the pouch is tilted after the heating of the pouch is finished, a situation in which a large amount of contents leaks from the opening formed in the second seal portion is unlikely to occur. Moreover, when the heating of the pouch is completed, a state in which the surfaces of the sheets constituting the unsealed portion are in close contact with each other with water vapor is easily formed. When the surfaces of the sheets are in close contact, even if the contents pass through the opening formed in the second seal portion, the movement of the contents is hindered by the intimate unsealed portion, It is hard to leak outside the edge of the seat.

[2] According to an example of the pouch, an inner edge of the peeling restricting portion includes a portion extending along the first seal portion.
[3] According to an example of the pouch, the connection portion includes a first connection portion that connects one end portion of the distal end portion and a first end portion constituting the first seal portion, and Including a second connection portion that connects the other end portion of the tip portion and a second end portion constituting the first seal portion, wherein one of the first connection portion and the second connection portion is The peeling restricting portion is included, and the other of the first connecting portion and the second connecting portion does not include the peeling restricting portion.

[4] According to an example of the pouch, the second seal portion is configured such that the tip portion faces the center of the accommodation space.
[5] According to an example of the pouch, the contents put into the accommodation space are provided.

  According to the pouch, it is difficult to cause a situation in which a large amount of content leaks from the opening formed by the peeling of the seal.

The front view of the pouch of embodiment which takes an open state. The front view of the pouch of embodiment which takes a closed state. FIG. 3 is an enlarged view of the steaming seal portion of FIGS. 1 and 2. The front view which shows the state which the front-end | tip part of the steaming seal part of the pouch of FIG. 2 peeled. The figure which shows the state in which the pouch of FIG. 4 was tilted. The figure which shows the state by which the upper seal part of FIG. 5 is cut off.

(Embodiment)
1 and 2 show an example of the configuration of the pouch 1. The form of the pouch 1 is a standing pouch. The states that can be taken by the pouch 1 include at least an open state and a closed state. In another example, the form of the pouch 1 is a flat pouch. FIG. 1 shows the pouch 1 in an open state, and FIG. 2 shows the pouch 1 in a closed state. The opened state of the pouch 1 is a state in which the content 100 is not put into the pouch 1 and the opening 15 of the pouch 1 is opened. The closed state of the pouch 1 is a state in which the content 100 is put into the pouch 1 and the opening 15 is sealed. The content 100 is a food containing a sauce, for example. In one example, a closed pouch 1 is provided to the end user.

  As shown in FIG. 1, the pouch 1 includes a first sheet 11, a second sheet 12, and a gusset sheet 13. The first sheet 11 and the second sheet 12 are a pair of stacked sheets. The pouch 1 in an open state is provided with a seal portion 20 in which the sheets 11 to 13 are sealed from each other. In addition, the dot shown by FIGS. 1-6 has shown the sealed part in each sheet | seat 11-13.

Each sheet 11-13 has the following layer structures, for example.
Each sheet 11-13 includes an outermost layer, an intermediate layer, and an innermost layer. An example of the material constituting the outermost layer is a transparent material. An example of a transparent material is polyethylene terephthalate. The intermediate layer includes a printing layer, a first adhesive layer, a stretched nylon layer, and a second adhesive layer. The printing layer is provided inside the outermost layer. In one example, a picture and a text for product description are printed on the outer surface of the printing layer. The first adhesive layer is provided inside the printing layer. The stretched nylon layer is provided inside the first adhesive layer. The second adhesive layer is provided inside the stretched nylon layer. An example of the material constituting each adhesive layer is a dry laminate adhesive. The innermost layer is provided inside the second adhesive layer. An example of the material constituting the innermost layer is unstretched polypropylene.

  The seal part 20 includes a first side seal part 21, a second side seal part 22, and a gusset seal part 23. The first side seal portion 21 is an example of a first seal portion, and is a portion where one side portion 11A of the first sheet 11 and one side portion 12A of the second sheet 12 are sealed to each other. is there. The second side seal portion 22 is a portion where the other side portion 11B of the first sheet 11 and the other side portion 12B of the second sheet 12 are sealed with each other. The gusset seal portion 23 is a portion where the sheets 11 to 13 are sealed to each other so that the gusset seal portion 23 of the pouch 1 is configured.

  Since each of the sheets 11 to 13 is sealed by the seal portion 20, an accommodation space 14 that can accommodate the contents 100 is formed between the first sheet 11 and the second sheet 12. An opening 15 that opens the accommodation space 14 is provided on the upper portion of the opened pouch 1. The contents 100 are put into the storage space 14 and the sheets 11 and 12 are sealed so that the opening 15 is closed, whereby the closed pouch 1 shown in FIG. 2 is configured. The seal portion 20 of the closed pouch 1 further includes an upper seal portion 24 that closes the opening 15 in addition to the seal portions 21 to 23.

  A notch 22 </ b> A is provided in the upper part of the second side seal portion 22. A cutting line (not shown) connected to the notch 22 </ b> A is provided on the top of the pouch 1. A part of the pouch 1 including the upper seal portion 24 is cut along the cut line from the notch 22A, whereby the opening 15 is opened, and the pouch 1 in use is configured. The end user can take out the content 100 from the opened opening 15.

  The first side seal portion 21 includes an upper seal portion 21 </ b> A, a lower seal portion 21 </ b> B, and a steaming seal portion 30. The upper seal portion 21 </ b> A and the lower seal portion 21 </ b> B are portions that are sealed along the edges of the sheets 11 and 12. The steaming seal portion 30 is an example of a second seal portion for discharging the water vapor generated from the contents 100 to the outside of the accommodation space 14 when the closed pouch 1 is heated by the heating means. It is a provided part. The steaming seal part 30 is continuous with the upper seal part 21A and the lower seal part 21B, and the side part 11A of the first sheet 11 and the side part 12A of the second sheet 12 together with the seal parts 21A and 21B. It is sealed.

  FIG. 3 is an enlarged view of the steaming seal portion 30. The shape of the vapor-permeable seal portion 30 is a shape that is recessed from the outer edge 11C, 12C side of each sheet 11, 12 toward the accommodation space 14 side. The vapor transmission seal part 30 includes a tip part 40 and a connection part 50. The front end portion 40 is provided at a location where strong stress concentration occurs in each of the sheets 11 and 12 when the pressure in the accommodation space 14 is increased by water vapor generated from the contents 100 in the closed pouch 1. For this reason, when the internal pressure of the closed pouch 1 rises, at least the tip 40 of the steaming seal portion 30 peels off, and the opening 31 (which connects the housing space 14 and the outside of the housing space 14 to the peeled portion) 4) is formed.

  The connection portion 50 includes a first connection portion 60 that connects one end portion 41 of the tip portion 40 and the end portion 25 of the upper seal portion 21A, and the other end portion 42 of the tip portion 40 and the end of the lower seal portion 21B. A second connecting portion 80 that connects the portion 26 is included.

  The first connecting portion 60 includes a peeling regulating portion 70 that regulates peeling of the vapor-permeable sealing portion 30 that proceeds from the distal end portion 40 side toward the upper seal portion 21A side, and a peeling regulating portion 70 and the upper seal portion 21A. Side-side end 73 connecting the two. The peeling restricting portion 70 is inclined toward the opening 15 as it goes from the tip 40 side toward the upper seal portion 21A.

  The peeling restricting portion 70 is connected to one end portion 41 of the distal end portion 40, and is connected to the first portion 71 and the first portion 71, which are portions having a constant seal width XA, and the upper seal portion from the distal end portion 40 side. A second portion 72 having a seal width XB that increases toward the 21A side is included. The seal width XA is a dimension of a perpendicular line from the outer edge 71A of the first portion 71 to the inner edge 71B, and the seal width XB is a dimension of a perpendicular line from the outer edge 72A of the second portion 72 to the inner edge 72B. The outer edge 72A of the second portion 72 extends in the same direction as the outer edge 71A of the first portion 71. An inner edge 72 </ b> B of the second portion 72 extends along the first side seal portion 21.

  The side end portion 73 connects the widest portion of the second portion 72 with the seal width XB and the end portion 25 of the upper seal portion 21A. The outer edge 73 </ b> A of the side-side end portion 73 extends in the same direction as the outer edge 72 </ b> A of the second portion 72. The inner edge 73B of the side end 73 is inclined so as to approach the upper seal portion 21A from the inner edge 72B of the second portion 72.

  The second connection portion 80 extends in the width direction of the pouch 1. The seal width XC of the second connection portion 80 is constant. The seal width XC is a dimension of a perpendicular line extending from the outer edge 80A of the second connection portion 80 to the inner edge 80B.

  The pouch 1 further includes an unsealed portion 90. The unsealed portion 90 is a part of each of the sheets 11 and 12 and is a portion surrounded by the outer edge 20 </ b> A of the first side seal portion 21, and the first unsealed portion 91 and the second unsealed portion 92. including. The surfaces of the sheets 11 and 12 constituting the unsealed portion 90 are not sealed. The first unsealed portion 91 is a portion corresponding to the depression of the vapor-permeable seal portion 30 and is a portion surrounded by the outer edge 30 </ b> A of the vapor-permeable seal portion 30. The second unsealed portion 92 is a portion including the outer edges 11C, 12C of the sheets 11, 12, and is a portion formed between the end portion of the upper seal portion 21A and the end portion of the lower seal portion 21B.

An example of how the end user uses the pouch 1 will be described.
First, the closed pouch 1 is placed in heating means (not shown) such as a microwave oven and heated by the heating means. After the heating is finished, the pouch 1 is carried by the end user as shown in FIG. Next, as shown in FIG. 6, a portion including the upper seal portion 24 along the notch 22 </ b> A and a cut line (not shown) is cut by the end user, and the opening 15 is opened. Next, the content 100 is taken out of the pouch 1 through the opening 15.

According to the pouch 1, the following actions and effects can be obtained.
When the closed pouch 1 is heated by the heating means, water vapor is generated from the contents 100, and the pressure in the accommodation space 14 gradually increases. For this reason, the 1st sheet | seat 11 and the 2nd sheet | seat 12 expand | swell in the direction which mutually spaces apart, and the front-end | tip part 40 of the vapor-permeable seal part 30 peels, and the opening 31 is formed. After the front end portion 40 is peeled off, the peeling of the vapor-permeable seal portion 30 proceeds toward the first side seal portion 21. Since the first connecting portion 60 is provided with the peeling restricting portion 70, for example, the peeling of the seal in the steaming seal portion 30 is performed at the boundary portion between the first portion 71 and the second portion 72 of the peeling restricting portion 70. finish.

  The water vapor staying in the accommodation space 14 passes through the passage 31 formed between the pair of sheets 11 and 12 in the opening 31 formed at least in the leading end portion 40 and the unsealed portion 90, and the respective sheets 11 and 12. Are discharged outside the outer edges 11C and 12C. For this reason, the pouch 1 is hard to burst.

  The size of the opening 31 formed in the vapor sealing part 30 by peeling of the vapor sealing part 30 is defined by the peeling regulating part 70, and an opening larger than the opening 31 having a predetermined size is formed in the vapor sealing part 30. Hard to form. For this reason, even if the pouch 1 is tilted after the heating of the pouch 1 is finished, a situation in which a large amount of the content 100 leaks from the opening 31 formed in the steaming seal portion 30 is unlikely to occur. Further, when the heating of the pouch 1 is finished, the surfaces of the sheets 11 and 12 constituting the unsealed portion 90 are in close contact with each other by water vapor. For this reason, even if the contents 100 pass through the opening 31 formed in the vapor-sealing seal portion 30, the movement of the contents 100 is hindered by the tightly-sealed portion 90, and the contents 100 are in contact with the sheets 11, 12 respectively. The outer edges 11C and 12C are less likely to leak outside.

  Further, the seal width XB of the peeling restricting portion 70 gradually increases from the distal end portion 40 side toward the upper seal portion 21A side. For this reason, in the process of peeling of the peeling restricting portion 70, stress concentration is unlikely to be locally generated in the peeling restricting portion 70, and the peeling proceeds stably until the peeling is restricted by the peel restricting portion 70.

  Further, since the inner edge 73B of the side-side end portion 73 is inclined so as to approach the upper seal portion 21A from the inner edge 72B of the second portion 72, the passage between the first sheet 11 and the second sheet 12 is omitted. A wide area for forming a cutoff line or the like above the steam seal portion 30 can be secured.

(Modification)
The above description of the embodiment is an exemplification of a form that can be taken by the pouch according to the present invention, and is not intended to limit the form. The pouch according to the present invention may take, for example, a form in which the modifications of the above-described embodiment shown below and at least two modifications not contradicting each other are combined.

  -The shape of the steaming seal part 30 can be arbitrarily changed. In the first example, the side-side end portion 73 is omitted from the first connection portion 60, and the peeling regulating portion 70 is connected to the upper seal portion 21A. The seal width XB of the peeling restricting portion 70 becomes wider from the tip portion 40 side toward the upper seal portion 21A side. In the second example, the shape of the first portion 71 of the peeling restricting portion 70 is a shape in which the seal width XA becomes narrower from the distal end portion 40 toward the second portion 72. In the third example, in addition to the first connection portion 60, the second connection portion 80 is also provided with a peeling restricting portion. The peeling restricting portion of the second connection portion 80 has a shape according to the shape of the peeling restricting portion 70 of the first connection portion 60, for example. In the fourth example, only the second connecting portion 80 is provided with a peeling restricting portion.

  -The structure of each sheet | seat 11-13 can be changed arbitrarily. In the first example, the first sheet 11 and the second sheet 12 are configured by bending one sheet. In the second example, each sheet 11 to 13 is configured by bending one sheet.

DESCRIPTION OF SYMBOLS 1: Pouch 11: 1st sheet | seat 12: 2nd sheet | seat 14: Storage space 20: Seal part 21: 1st side seal part (1st seal part)
25: End (first end)
26: end (second end)
30: Steaming seal part (second seal part)
40: tip portion 41: end portion (one end portion)
42: End (the other end)
50: Connection part 60: First connection part 70: Peeling restriction part 80: Second connection part 90: Unsealed part 100: Contents

Claims (5)

A pair of stacked sheets;
A portion that seals the pair of sheets so that an accommodation space capable of accommodating contents is formed between the pair of sheets, a first seal portion along an edge of the pair of sheets; and A seal portion including a second seal portion having a shape recessed toward the accommodation space side;
An unsealed portion that is a part of the pair of sheets and is an unsealed portion surrounded by the second seal portion;
The second seal portion includes a tip portion configured to be peeled off due to stress concentration when the pressure in the storage space is increased by water vapor generated from the contents, the tip portion, and the first portion. Including a connecting portion that connects the sealing portion of
The connecting portion has a peeling width that is wider than the tip portion, and includes a peeling regulating portion that regulates peeling of the second seal portion that proceeds from the tip side toward the first seal portion,
The peeling regulating portion is a pouch that has a wider seal width from the distal end side toward the first seal portion side. The pouch according to claim 1, wherein an inner edge of the peeling restricting portion includes a portion extending along the first seal portion. The connecting portion includes a first connecting portion that connects one end portion of the tip end portion and a first end portion constituting the first seal portion, and the other end portion of the tip end portion and the first end portion. Including a second connection portion connecting the second end portion constituting the one seal portion,
One of the first connection part and the second connection part includes the separation regulating part,
3. The pouch according to claim 1, wherein the other of the first connection portion and the second connection portion does not include the peeling restricting portion. The pouch according to any one of claims 1 to 3, wherein the second seal portion is configured such that the tip portion faces the center of the accommodation space. The pouch according to any one of claims 1 to 4, comprising the contents put into the accommodation space.

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